How do humans resist the cosmic radiation in the interstellar process?

According to the observations of astronomers, proxima centauri is the closest star to the solar system, and its distance from the solar system is about 4.22 light years. However, there is a planet called proxima b in a nearby galaxy. Astronomers have found that it is a terrestrial planet through long-term observation, and the environmental conditions of the planet may be suitable for human habitation. So if human beings want to settle on such a distant planet, what should they pay attention to in the process of immigration?

The first is the level of human science and technology. The current level of human science and technology is not enough to fly out of the solar system or even land on Mars. Therefore, the premise of human interstellar migration is to make a major breakthrough in space technology and solve the energy and power problems of manned spacecraft. At present, the fastest aircraft made by human beings is the Voyager probe. If the manned spacecraft can reach that speed, it will take 1000 years to reach the neighboring galaxies.

In addition to the level of human science and technology, we also need to consider the factors of the cosmic environment. The universe is a place full of unknowns, meteorites pass through at will, and rays cover the whole universe. Therefore, in the process of interstellar migration, human beings especially need to defend against the radiation of various rays in the universe. Because they destroy the genetic material in the nucleus through cells, which seriously affects human health.

Aurora on the earth is produced by the strong light of the sun hitting the atmosphere. The sun has been radiating outward. If the earth had not been protected by the atmosphere and ozone layer, life on the earth might have ceased to exist long ago. Because of the existence of the earth's magnetic field, life on earth is protected from cosmic rays. Once humans leave the earth, there will be no magnetic field to protect us.

However, scientists have found that if the metabolic activity in the organism is slow, it will not be affected by radiation. In other words, in the process of interstellar migration, if humans can choose hibernation like some animals, they can escape most of the cosmic radiation.